As a tribute, women covered women's suffrage leader Susan B. Anthony's tombstone with "I Voted" stickers from the 2016 U.S. presidential election. REUTERS/Adam Fenster On August 26th, 1920, the 19th Amendment of the US Constitution was ratified, granting women the right to vote.

Here are 16 influential women from the 18th century through today who have championed the cause of equality, raising their voices for others in the fight against sexism, racism, and marginalization.

Sojourner Truth was an African-American abolitionist who was a lifelong defender of gender equality. Though she was born into slavery, Truth escaped to freedom with her young daughter at the age of 29.

In 1828, she became the first black woman to win a custody court battle against a white man, and was able to recover her son from slavery. At the Ohio Women's Rights Convention of 1851, Truth delivered a speech titled "Ain't I a Woman?" that stirred hearts and became widely told during the Civil War era.

Truth was fearless in her fight for racial equality. She recruited black troops for the Union Army and attempted to secure land grants for former slaves after abolition. In the 1860s, she often rode streetcars in Washington D.C. to promote desegregation and publicly protest racism.

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2. Susan B. Anthony (1820-1906) was a powerful social activist.

She was arrested for attempting to vote.
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Susan B. Anthony was a social activist and icon in the early women's rights movement. Raised by a family of Quakers, Anthony grew up handing out anti-slavery petitions as a child and teenager.

Though she was a lifelong supporter of gender and racial equality, Anthony and close friend Elizabeth Stanton diverged from the American Woman Suffrage Association when the Fifteenth Amendment was ratified in 1870. Controversially, they posited that no more men should be allowed to vote until women and men — of all races — could also vote.

In 1872, Anthony was arrested for attempting to vote. The trial would, years later, lead to her presentation to Congress introducing the 19th Amendment. Though it was not ratified until 1920, it was widely known as the Susan B. Anthony Amendment.

Similarly to Sojourner Truth, Wells was born into slavery. Later freed by the Emancipation Proclamation, she lost the majority of her family to yellow fever when she was only 16 years old. She spent most of her life working as a teacher and investigative reporter, documenting lynching and racial violence in the US during the late 1800s and early 1900s.

Frida Kahlo was born in Coyoacán, Mexico in 1907. To show her strong support for the Mexican Revolution, Frida later claimed her birthdate to be three years later, so people would "associate her" with the revolution. While she might be most recognizable for her fiercely thick eyebrows, Kahlo's legacy goes far beyond her appearance.

The artist used her work to portray taboo topics such as abortion, miscarriage, birth, and breastfeeding, among other things. In doing so, she opened up a conversation about these topics.

In and out of the communist party, Kahlo and her husband Deigo Rivera were politically active. The couple raised money for the Republicans fighting against Franco's forces in the Spanish Civil War, and just days before her death Frida attended a protest against CIA intervention in Guatemala.

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5. Simone de Beauvoir (1908-1986) paved the way for modern feminism.

She had no hesitation in going against the grain.
Jean-Jacques Levy/AP

Born in Paris in 1908, Simone de Beauvoir was an outspoken French philosopher and writer.

Perhaps her most influential work, "The Second Sex" was written in 1949 and helped begin a conversation around modern feminism. In the book, she articulated a thoughtful attack on the idea that women belonged in passive roles, and criticized the patriarchy. The book was banned by The Vatican but that didn't stop Beauvoir from continuing the fight for equality.

Her then-controversial philosophies helped launch a an ever-evolving conversation about what feminism is.

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6. Yuri Kochiyama (1921-2014) fought a lifelong fight against racism.

She was nominated for a Nobel Peace Prize.
AP/Mike Wintroath

Yuri Kochiyama was born and raised in San Pedro, CA. After Pearl Harbor, her father was arrested by the FBI and her family was sent to a Japanese internment camp in Arkansas.

During this period of her life, Yuri saw parallels between the prejudice against Asian Americans and the tribulations of black Americans, and later participated in anti-war, black liberation, and Asian-American movements.

Kochiyama and her husband often invited Freedom Riders — young men and women fighting for civil rights in the South — over to their house for dinner, and she later became close friends with Malcolm X. Kochiyama was a staunch defender of US political prisoners, and was nominated for the Nobel Peace Prize in 2005 for her lifelong fight against racism.

She fought, and still fights, for workers' rights, immigrants' rights, and women's rights. Huerta has been awarded many accolades throughout her career in activism, and in 2012 received the Eleanor Roosevelt Award for Human Rights. Perhaps most notably in present-day latinx community, she's known as the originator of the "Sí, se puede" chant, which means "Yes, it is possible."

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8. Ruth Bader Ginsburg (b. 1933) has used her Supreme Court seat to change the course of history.

Ginsburg has been incredibly influential throughout her career.
Ron Edmonds/AP

9. Gloria Steinem (b. 1934) is a prominent feminist movement leader.

Gloria Steinem is a journalist and social activist.
Mike Coppola/Getty Images

A social activist and journalist, Gloria Steinem was a prominent leader in the feminist movement during the 1960s and 1970s, and continues to play a vital role in the feminist fight todsy. A self-described radical feminist, Steinem helped launched Ms. magazine in the 1970s — the first feminist focused publication at the time.

Steinem has not been without her controversies: She faced widespread criticism from the LGBT community in the late 1970s for her disapproval of famed tennis player Renee Richards' sex reassignment surgery. Steinem later clarified that her remarks came at a time when little was known about the transgender experience, and said in 2013 that transgender lives "should be celebrated, not questioned."

In recent years, she's become a vocal advocate of an intersectional feminist approach, arguing that the feminist movement must be inclusive of all races, classes, and sexual identities.

"Disproportionately, African American women invented feminism, and if you call it a white movement, you've eradicated … hundreds and hundreds of people who I learned from, who were my teachers," Steinem told Girls Leadership in 2017.

After receiving her masters in Library Science at Columbia University in 1961, Lorde released her first foray into protest poetry titled "Cables to Rage." It was also the book where she came out as a lesbian. "Cables to Rage" along with her other books of poetry explored everything from racism to women's rights to lesbian relationships to homophobia. Her work established her as a force in the feminist community.

Lorde called out the feminism movement for catering exclusively for white women and argued that for feminism to be powerful, it needed to acknowledge the value of all women, not just one type. This argument was depicted in her book "Sister Outsider" and it is credited for shaping a more inclusive feminist movement.

Despite the odds stacked against Johnson, she, along with her friend Sylvia Rivera, became a prominent figure in the fight for the inclusion of transgender people in the LGBT movement. She joined Rivera in founding Street Transvestite Action Revolutionaries, or STAR, to advocate for young transgender people, actively participated in the gay pride parades of the 1970s, and advocated for AIDS patients.

In an interview with Leslie Feinberg, Sylvia said, "I was a radical, a revolutionist. I am still a revolutionist. I was proud to make the road and help change laws and whatnot. I was very proud of doing that and proud of what I'm still doing, no matter what it takes."

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13. Sally Ride (1951-2012) was the first American woman in space.

Sally Ride became the first American woman to launch into space on June 18, 1983 on the space shuttle Challenger.NASA

In 1978, Sally Ride was selected to the first class of 35 astronauts - including six women - who would fly on the space shuttle Challenger in 1983.

She carried this belief throughout her entire career and life. She wrote five science books for children and initiated and directed education projects for students hoping to pursue science.

In 2001, she started Sally Ride Science which helps to combat misconceptions about women in STEM and "inspire young people in science, technology, engineering, and math (STEM) and to promote STEM literacy."

Dr. Ride has received numerous honors and awards. She was inducted into the National Women's Hall of Fame and the Astronaut Hall of Fame and has received the Jefferson Award for Public Service, the von Braun Award, the Lindbergh Eagle and the NCAA's Theodore Roosevelt Award. She has also twice been awarded the NASA Space Flight Medal.

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14. Roxane Gay (b. 1974) is a prominent voice in modern feminism.

She's also a New York Times best-selling author.
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Roxane Gay is a Haitian-American writer, professor, and editor. In 2014 she published the New York Times best-seller "Bad Feminist," a collection of essays about gender, sexuality, race, and politics. "It just shows what it's like to move through the world as a woman," Gay told Time in 2014. "It's not even about feminism per se, it's about humanity and empathy."

As well as being a prominent voice in contemporary feminism, Gay and her co-author Yona Harvey became the first black women to be lead writers for Marvel when they were signed to write "World of Wakanda," a comic book spin-off of "Black Panther." In 2017, Gay released her memoir "Hunger," an exploration of her upbringing and her relationship with everything from weight, to body image, to food.

Much of Gay's work is meant to deconstruct harmful and marginalizing themes in mainstream feminism. Gay is also a huge proponent of challenging rape culture and empowering women who have endured painful experiences.

The author of groundbreaking novels "Americanah" and "That Thing Around Your Neck," Chimamanda Ngozi Adichie also developed the popular TED Talk "We should all be feminists," based on her book of the same name.

Adichie was born in Nigeria and moved to the US at 19 to attend college at Drexel University. Shortly after graduating, she published her first book "Purple Hibiscus." In 2016, she collaborated with Beyoncé on her track "Flawless."

Malala Yousafzai is the youngest Nobel Prize laureate in history
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Just 21, Malala Yousafzai has already made huge leaps for female education and advocacy. Encouraged by her father, Malala wrote for BBC Urdu and detailed her experiences living under Taliban occupation when she was 11. Yousafzai and her family lived in the Swat Valley in Pakistan, where local Taliban groups prevented girls from going to school, often in violent ways.

At age 15, Yousafzai was targeted in an assassination attempt by a Taliban gunman. Although Yousafzai was shot in the head, she survived the incident. Yousafzai and her story were met with a global support and acclaim.

In the years following the shooting, Yousafzai has risen in prominence as a feminist and social activist. She founded a non-profit education organization called the Malala Fund and wrote the memoir "I am Malala."

In 2012, at the age of 17, Yousafzai was awarded the Nobel Peace Prize and became the youngest Nobel Prize laureate in history. Yousafzai is currently pursuing her bachelor's degree at Oxford University, and continues to speak out on female education and gender equality.